Bhagavad Gita Chapter 11 Verse 12
भगवद् गीता अध्याय 11 श्लोक 12

दिवि सूर्यसहस्रस्य भवेद्युगपदुत्थिता।
यदि भाः सदृशी सा स्याद्भासस्तस्य महात्मनः।।11.12।।



English Translation - Swami Gambirananda
11.12 Should the effulgence of a thousand suns blaze forth simultaneously in the sky, that might be similar to the radiance of that exalted One.


English Translation - Swami Sivananda
11.12 If the splendour of a thousand suns were to blaze out at once (simultaneously) in the sky, that would be the splendour of that mighty Being (great Soul).


English Translation - Dr. S. Sankaranarayan
11.12. If  the splendour of a thousand suns were to  burst forth at once in the sky, would that be eal to the splendour of that Mighty Self ?


English Commentary  - Swami Sivananda
11.12 दिवि in the sky? सूर्यसहस्रस्य of a thousand suns? भवेत् were? युगपत् at once (simultaneously)? उत्थिता arisen? यदि if? भाः splendour? सदृशी like? सा that? स्यात् would be? भासः splendour? तस्य of that? महात्मनः of the mighty Being (great soul).Commentary Divi here means in the Antariksha or the sky.Mahatma here refers to the great Soul or the mighty Being? the Cosmic Form.


English Translation of Sanskrit Commentary By Sri Shankaracharya's
11.12 Should the bhah, effulgence; surya-sahasrasya, of a thousand suns; utthita bhavet, blaze forth; yugapat, simultaneously; divi, in the sky, or in heaven which is the third as counted (from this earth);sa, that; yadi syat, might be-or it might not be-; sadrsi, similar; to the bhasah, radiance; tasya, of that; mahat-manah, exalted One, the Cosmic Person Himself. The idea is that the brillinace of the Cosmic Person surely excels even this!
Further,


English Translation of Commentary  - Dr. S. Sankaranarayan
11.12 Sri Abhinavagupta did not comment upon this sloka.


English Translation of Ramanuja's Sanskrit Commentary
11.12 This is for illustrating that His splendour is infinite. The meaning is that it is of the nature of inexhaustible radiance.


Commentary  - Chakravarthi Ji
If at one time the effulgence (bhah) of a thousand suns arose, then it would be somewhat similar to the effulgence (bhasah) of the universal form (mahatmanah).


Rudra Vaishnava Sampradaya - Commentary





The unparalleled and incomparable  nature  of  the  Supreme  Lord  Krishnas
visvarupa or divine universal form is now being stated.  The  effulgence  of
this universal form is being compared to the simultaneous rising  of  surya-
sahasrasya or 1000 suns. This is to give a general idea of  the  magnificent
splendour Lord Krishnas phenomenal universal form manifested. This  affirms
that there is nothing else to compare with the  visvarupa  in  the  material
existence and gives the evidence from what was exhibited in verse nine.


Brahma Vaishnava Sampradaya - Commentary


The word  sahasraya  means  thousand  but  can  literally  be  taken  to  be
innumerable  as  1000  suns  simultaneously  rising  in  the  sky  would  be
uncountable. Like the thousands of heroic  deeds  of  the  avatars  of  Lord
Krishna,  this  statement  is  made  for  elucidation  of  the   resplendent
splendour of the visvarupa or divine universal form.  In  the  Rig  Veda  is
stated: The Supreme Lord of eternal power and eternal energy is  of  eternal
brilliance even easily exceeding the sun. This comparison is  based  on  the
conclusive evidence of the Vedic scriptures and it is of no avail to try  to
compare it to anything else.


Shri Vaishnava Sampradaya - Commentary





The example of a 1000 suns is a mere illustration  to  show  the  degree  of
infinite splendour and radiance that the form of  Lord  Krishnas  visvarupa
or divine universal form displayed in ever increasing measure.


Kumara Vaishnava Sampradaya - Commentary
The example of a 1000 suns is a mere illustration  to  show  the  degree  of
infinite splendour and radiance that the form of  Lord  Krishnas  visvarupa
or divine universal form displayed in ever increasing measure.


Transliteration Bhagavad Gita 11.12Divi sooryasahasrasya bhavedyugapadutthitaa;
Yadi bhaah sadrishee saa syaadbhaasastasya mahaatmanah.


Word Meanings Bhagavad Gita 11.12divi—in the sky; sūrya—suns; sahasrasya—thousand; bhavet—were; yugapat—simultaneously; utthitā—rising; yadi—if; bhāḥ—splendor; sadṛiśhī—like; sā—that; syāt—would be; bhāsaḥ—splendor; tasya—of them; mahā-ātmanaḥ—the great personality